Minecraft forge crash, need help.

I tried to fix it alocating more memory to the game, but when i alocate more than 1300M it just instacrashes without report. In a few days im gonna try with a x64 system. Crash report:

(I have 4g ram, 3.4 usable ram. it works perfectly if i only let the game use 800M, such a random thing)

---- Minecraft Crash Report ----
// Ouch. That hurt :(

Time: 12/19/20 7:33 AM
Description: Unexpected error

java.lang.NullPointerException: Unexpected error
    at net.minecraft.world.World.getSkyColorBody(World.java:1487)
    at net.minecraft.world.WorldProvider.getSkyColor(WorldProvider.java:463)
    at net.minecraft.world.World.func_72833_a(World.java:1478)
    at net.minecraft.client.renderer.EntityRenderer.func_78466_h(EntityRenderer.java:1723)
    at net.minecraft.client.renderer.EntityRenderer.func_175068_a(EntityRenderer.java:1273)
    at net.minecraft.client.renderer.EntityRenderer.func_78471_a(EntityRenderer.java:1259)
    at net.minecraft.client.renderer.EntityRenderer.func_181560_a(EntityRenderer.java:1062)
    at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:1119)
    at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:398)
    at net.minecraft.client.main.Main.main(SourceFile:123)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:497)
    at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
    at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Thread: Client thread
Stacktrace:
    at net.minecraft.world.World.getSkyColorBody(World.java:1487)
    at net.minecraft.world.WorldProvider.getSkyColor(WorldProvider.java:463)
    at net.minecraft.world.World.func_72833_a(World.java:1478)
    at net.minecraft.client.renderer.EntityRenderer.func_78466_h(EntityRenderer.java:1723)
    at net.minecraft.client.renderer.EntityRenderer.func_175068_a(EntityRenderer.java:1273)
    at net.minecraft.client.renderer.EntityRenderer.func_78471_a(EntityRenderer.java:1259)

-- Affected level --
Details:
    Level name: MpServer
    All players: 0 total; []
    Chunk stats: MultiplayerChunkCache: 0, 0
    Level seed: 0
    Level generator: ID 00 - default, ver 1. Features enabled: false
    Level generator options: 
    Level spawn location: World: (8,64,8), Chunk: (at 8,4,8 in 0,0; contains blocks 0,0,0 to 15,255,15), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
    Level time: 0 game time, 0 day time
    Level dimension: 0
    Level storage version: 0x00000 - Unknown?
    Level weather: Rain time: 0 (now: false), thunder time: 0 (now: false)
    Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false
    Forced entities: 0 total; []
    Retry entities: 0 total; []
    Server brand: ~~ERROR~~ NullPointerException: null
    Server type: Integrated singleplayer server
Stacktrace:
    at net.minecraft.client.multiplayer.WorldClient.func_72914_a(WorldClient.java:420)
    at net.minecraft.client.Minecraft.func_71396_d(Minecraft.java:2741)
    at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:427)
    at net.minecraft.client.main.Main.main(SourceFile:123)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:497)
    at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
    at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

-- System Details --
Details:
    Minecraft Version: 1.12.2
    Operating System: Windows 7 (x86) version 6.1
    Java Version: 1.8.0_51, Oracle Corporation
    Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
    Memory: 411301144 bytes (392 MB) / 1258291200 bytes (1200 MB) up to 1375731712 bytes (1312 MB)
    JVM Flags: 8 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1300M -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=16M
    IntCache: cache: 1, tcache: 1, allocated: 12, tallocated: 94
    FML: MCP 9.42 Powered by Forge 14.23.5.2854 19 mods loaded, 19 mods active
    States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored

    | State  | ID                  | Version          | Source                               | Signature                                |
    |:------ |:------------------- |:---------------- |:------------------------------------ |:---------------------------------------- |
    | LCHIJA | minecraft           | 1.12.2           | minecraft.jar                        | None                                     |
    | LCHIJA | mcp                 | 9.42             | minecraft.jar                        | None                                     |
    | LCHIJA | FML                 | 8.0.99.99        | forge-1.12.2-14.23.5.2854.jar        | e3c3d50c7c986df74c645c0ac54639741c90a557 |
    | LCHIJA | forge               | 14.23.5.2854     | forge-1.12.2-14.23.5.2854.jar        | e3c3d50c7c986df74c645c0ac54639741c90a557 |
    | LCHIJA | jei                 | 4.16.1.301       | jei_1.12.2-4.16.1.301.jar            | None                                     |
    | LCHIJA | abyssalcraft        | 1.10.3           | AbyssalCraft-1.12.2-1.10.3.jar       | 220f10d3a93b3ff5fbaa7434cc629d863d6751b9 |
    | LCHIJA | aquaculture         | 1.6.8            | Aquaculture-1.12.2-1.6.8.jar         | None                                     |
    | LCHIJA | baubles             | 1.5.2            | Baubles-1.12-1.5.2.jar               | None                                     |
    | LCHIJA | bibliocraft         | 2.4.5            | BiblioCraft[v2.4.5][MC1.12.2].jar    | None                                     |
    | LCHIJA | guideapi            | 1.12-2.1.8-63    | Guide-API-1.12-2.1.8-63.jar          | None                                     |
    | LCHIJA | bloodmagic          | 1.12.2-2.4.1-103 | BloodMagic-1.12.2-2.4.1-103.jar      | None                                     |
    | LCHIJA | cucumber            | 1.1.2            | Cucumber-1.12.2-1.1.2.jar            | None                                     |
    | LCHIJA | inventorypets       | 1.5.3.1          | inventorypets-1.12-1.5.3.1.jar       | None                                     |
    | LCHIJA | mysticalagriculture | 1.7.5            | MysticalAgriculture-1.12.2-1.7.5.jar | None                                     |
    | LCHIJA | patchouli           | 1.0-20           | Patchouli-1.0-20.jar                 | None                                     |
    | LCHIJA | roguelike           | 1.8.0            | RoguelikeDungeons-1.12.2-1.8.0.jar   | None                                     |
    | LCHIJA | somanyenchantments  | 0.4.4            | So+Many+Enchantments+V0.4.4.jar      | None                                     |
    | LCHIJA | thaumcraft          | 6.1.BETA26       | Thaumcraft-1.12.2-6.1.BETA26.jar     | None                                     |
    | LCHIJA | waystones           | 4.0.72           | Waystones_1.12.2-4.0.72.jar          | None                                     |

    Loaded coremods (and transformers): 
    GL info: ' Vendor: 'NVIDIA Corporation' Version: '4.6.0 NVIDIA 391.35' Renderer: 'GeForce GT 730/PCIe/SSE2/3DNOW!'
    Launched Version: 1.12.2-forge-14.23.5.2854
    LWJGL: 2.9.4
    OpenGL: GeForce GT 730/PCIe/SSE2/3DNOW! GL version 4.6.0 NVIDIA 391.35, NVIDIA Corporation
    GL Caps: Using GL 1.3 multitexturing.
Using GL 1.3 texture combiners.
Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.
Shaders are available because OpenGL 2.1 is supported.
VBOs are available because OpenGL 1.5 is supported.

    Using VBOs: Yes
    Is Modded: Definitely; Client brand changed to 'fml,forge'
    Type: Client (map_client.txt)
    Resource Packs: 
    Current Language: English (US)
    Profiler Position: N/A (disabled)
    CPU: 4x AMD Phenom(tm) II X4 955 Processor